Self-sown cucurbit = ?

The rambling cucurbit vine that's providing some welcome shade for the chooks in chookhouse #2, is a self-sown unknown. It's doing its best to overwhelm the Mary Washington asparagus to the rear of the righthand bed, and the younger Purple Pride asparagus behind the steel fence post is barely identifiable.

BTW, the asparagus to the left of the path is UC157. Both it and the purple varieties will be old enough to pick next spring, all being well. Mary Washington just finished her first season's harvest. Yum!